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function u(t) {
} //
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u(t) is called 60 times per second. t: Elapsed time in seconds. S: Shorthand for Math.sin. C: Shorthand for Math.cos. T: Shorthand for Math.tan. R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5) c: A 1920x1080 canvas. x: A 2D context for that canvas.
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Sitacious

function u(t) {

}//
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  • u/robbyg
    I feel like this is close but not quite right: w=t%1.06<.02?34:w*1.06;m=40,y=w/m;for(c.width=i=m*m;p=--i*i;q&&x.fillRect(i%m*y,~~(i/m)*y,y,y))q=S(p)>0,q&&x.fillRect(i%m*w,~~(i/m)*w,w,w)
  • u/Sitacious
    u/robbyg thats perfect!
  • u/Joachim
    A bit slow but 130 char: w=t%.8<.02?7:w/.9;m=150,y=w/m;for(c.width=999,i=m*m;p=--i*i;q&&x.fillRect(i%m*y,i/m*y,y,y))q=S(p)>0,q&&x.fillRect(i%m*w,i/m*w,w,w)

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u(t) is called 60 times per second. t: elapsed time in seconds. c: A 1920x1080 canvas. x: A 2D context for that canvas. S: Math.sin C: Math.cos T: Math.tan R: Generates rgba-strings, ex.: R(255, 255, 255, 0.5)